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ARTICLE · 11 DECEMBER 2025

California's AB 2013 Requires Generative AI Data Disclosure By January 1, 2026

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California continues its blistering pace in enacting artificial intelligence regulations. In 2024 alone, California enacted 18 AI-related bills seeking to regulate AI tools and increase transparency around AI data disclosure.

United StatesTechnology
Warrington Parker
Warrington Parker
Jacob Canter
Jacob Canter

California continues its blistering pace in enacting artificial intelligence regulations. In 2024 alone, California enacted 18 AI-related bills seeking to regulate AI tools and increase transparency around AI data disclosure.

Assembly Bill 2013 is one of those laws. Taking effect on January 1, 2026, AB 2013 requires developers of generative AI systems intended for public use in California to publish "high-level" information regarding the training data used.

The law does not define "high-level," leaving open the types of information that must be disclosed. It provides no compliance mechanism. It has no provisions relating to the protection of trade secrets.

Takeaways from AB 2013

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